Building History Click image for low-res file   CO-83-W-1 – View of Building 112 under construction, looking north-northwest. Building 112 was one of the first ten permanent buildings constructed at the Rocky Flats Plant and provided the first cafeteria services on site. (6/52) (Hi-res [300 dpi]) CO-83-W-2– View of interior of Building 112. Building 112 was used for events such as retirement parties and for off-hour meetings. (12/19/57) (Hi-res [300 dpi])